Motor block-stand



1. ,s. CARSWELL AND A. R. HAMMOND. MOTOR BLOCK STAND.

APPLICATION FILED SEPT- 24, 1920.

13,380,704. PatentedJune 7,192i.

Q W mm WEE STATEfi PATENT @FFEQE.

JOSEPH s. CARSWELL AND AMIL It. HAMMOND, or Boonn, IOWA.

MOTOR BLOCK-STAND.

Specification of Letters Patent.

Patented June 7, 1921.

Application filed September 24, 1920. Serial No. 412,605.

To all whom it may concern:

Be it known that we, JOSEPH S. OARSWELL and AMIL R. HAMMOND, citizens ofthe United States, and residents of Boone, in the county of Boone andState of Iowa, have invented a certain new and useful Motor-Block-Stand, of which the following is a specification.

Our invention relates to and consists in certain improvements in motorblock stands of the kind illustrated and described in our Patent No.1,326,147, issued December 28, 1919.

In connection with the use of our patented motor stand, the motor to berepaired is placed upon and clamped on a tilting platform and thisplatform is held" locked in various positions of its adjustment by aspring actuated pawl engaging a sector carried by the hinged platform.In connection withthe use of this device, it is frequently necessary toswing the platform, with its heavy motor, from one side to the other,and this requires considerable effort on the part of. the operator.Furthermore, in the event that the spring actuated pawl should beinadvertently held away from the notched sector, the entire platform,with its heavy engine, might fall from an upright position downwardlytoward either side, which might injure the engine.

The object of our invention is to provide means of simple, durable andinexpensive construction, that may be readily, quickly and easilyapplied to our motor stand, whereby the platform, with its motor clampedthereto, is yiel-dingly held normally in an upright position, and whentilted in either direction from this position the weight of the motorand platform will be partially supported by the springs to therebyrelieve any shocks and jars that might be caused by having the engineand its platform drop from vertical to an outwardly or downwardlyinclined position, and furthermore, to provide means by which theoperator may swing the motor and its supporting platform to any positionof its adjustment readily and easily and with the expenditure of only aslight amount of force.

Our invention consists in the construction, arrangement and combinationof the various parts of the device,- whereby the objects contemplatedare attained, as hereinafter more f y set f po nted 9st in our la ms andillustrated in the accompanying drawings, in which:

Figure 1 shows a vertical sectional view on the line 11 of Fig. 2.

Fig. 2 shows a side view of a motor block stand embodying our invention;and

Fig. 3 shows asimilar View of the top portion of the motor block standwith a motor clamped to the tilting platform, and the tilting platformand motor swung to position with the platform substantially vertical;

Referring to the accompanying drawings, the motor block stand to whichour improved attachment is applied is substantially similar to the oneillustrated in our said issued patent, and comprises a base 10 having atits upper end a shaft 11. The motor block platform is indicated bythenumeral 12, and is provided with downwardly extending lugs 13 pivotedto the shaft 11. Means are provided on the platform 12 for clamping amotor to the top surface of the said platform.

Fixed to the under surface of the platform 12 is a notched sector 14,and slidingly mounted in the base 10 is a pawl 15 to coact with thesector, which pawl is controlled by a treadle 16. All of the parts justdescribed are similar in construction and function to the structuredisclosed in our said patent.

For the purpose of assisting the operator in moving the platform andmotor to various positions of adjustment, and for cushioning sameagainst falling when tilted laterally from either side of a verticalposition, we have provided two torsion springs. Each spring comprises acoil 17 wound around the V shaft 11 and having one terminal 18 extendedupwardly and laterally and secured by a screw 19 to the platform 11, theother terminal 20 being extended downwardly and provided with a hook atits lower end to pass around the under side of one of the cross piecesof the frame 10. These two springs are coiled upon the shaft, and havetheir terminals extended in opposite direc tions, as clearly shown inFig. 1. By securing one terminal of each spring to the platform 12, alllateral movement of the springs is prevented and they are firmly andsecurely held in place.

The springs when arranged in the position shown in Fig. 1, will both bein substantially normal position and not under appreoiable tension.Assuming that an en;

gine is clamped to the platform 12, and that it is desired to move theplatform with its engine from the horizontal position of the platform toa position with the platform nearly vertical on either side, then theoperator releases the pawl 15 from its sector 14 and exerts a slightpressure upon one side or the other of the platform to tilt it in thedirection desired. During this tilting movement one of the springs willuncoil and the other coil upon the shaft, but the tension upon each willgradually increase, so that in the event that the pawl 15 was not placedin proper engagement with its sector, the motor and its platform wouldnot strike violently against the side of the base 10 in such a manner asmight cause injury to any part of the engine, and this falling movementwould be cushioned by both springs. Furthermore, when moving the engineand its platform from position with the platform substantially vertical,as shown in Fig. 3, it is obvious that no great strength on the part ofthe operator is required, because both the springs are under tension andwill assist the operator and exert their force in a direction tending toreturn the platform to horizontal position, as shown in Fig. 1.

We claim as our invention:

1. In a motor block stand, the combination of a base, a platformvpivotally mounted upon the base and designed to receive a motor to berepaired, and two torsion springs interposed between the platform andthe base, and so arranged that when the platform is tilted in eitherdirection both of the springs will be brought under progressivelyincreased tension during such tilting movement, to thereby cushion theplatform against falling movement in either direction, and also to exertspring pressure in a direction tending to return the platform to normalposition after ithas been tilted in either direction, for the purposesstated.

2. In a motor block stand, the combination of a base, a shaft carried bythe base, a tilting platform pivotally mounted on the shaft and designedto receive a motor block, means for holding the tilting platform invarious positions of its tilting movement relative to the base, andtwo'torsion springs, each having a coiled central portion-wound uponsaid shaft, and each having one terminal fixed to the platform and theother terminal provided with a hook to engage a part of the base, thecoils and terminals of the two springs being so arranged as to bebrought under progressively increasing tension as the platform movesfrom horizontal toward vertical position in either direction.

Des Moines, Iowa, September 14:, 1920.

JOSEPH S. CAR-SWELL. AMIL R. HAMMOND.

